Hydrogen-Bond Exchange Seen in Real Time
	Hydrogen bond exchange has been observed for the first time by a team of chemists from Kyoto University with the help of a scanning tunneling microscope while monitoring a single water dimer – two molecules of water bonded together. The hydrogen bond exchange takes place between two molecules with a frequency of a few tens of cycles per second, and the new observations may lead to a better understanding of the quantum tunneling and molecul ... [read more >>]
	09 May 2008, 05:53GMT | (c) 2008 Softpedia

Faster than Light?
	Quantum tunneling represents a quantum mechanics phenomenon, which allows a given particle to violate certain classical mechanics principles. For example, in order to extract an electron from the atom, one must contribute with an input of energy equal to or higher than that of the respective electron. However, quantum tunneling allows in some conditions for some particles to penetrate the potential barrier of the atom, even though classica ... [read more >>]
	26 January 2008, 06:35GMT | (c) 2008 Softpedia